Magneto pocket-lamp



G. M. BEAUDOT.

MAGNETO POCKET LAMP.

APPLICATION FILED one. 9, 1920.

1,380,180. Patented May 31,1921.

iiiiilflllmlllllliii? UNITED STATES GEORGES MAXINE BEAUDOT,

OF PARIS, FRANCE, ASSIGNOR TO GEORGES MAXINE IBEAUDOT AND AUGUSTE ANATOLE LION, BOTH OFPABIS, FRANCE.

MAGNETO POCKET-LAMP.

Specification of Letters Patent.

Patented May 31, 1921.

Application filed December 9, 1920. Serial No. 429,541.

T 0 all whom it may concern:

Be it known that I, GEORGES MAXIME BEAU'DOT, of 140 Boulevard Richard Lenoir, Paris, France, have invented a Magneto Pocket-Lamp, of which the following is a full, clear, and exact description.

This invention relates to a pocket lamp, in which the light is produced by a small magneto to which is imparted a rapid rotary movement.

The invention is firstly characterized by the device by means of which is imparted the rotary movement to the multiplying gear train driving the armature of the magneto. This device consists substantiall in a push-piece capable of taking a to-an -fro movement at right angles to the body or casing of the lamp the pressure ofthe hand acting on this push-piece causes it to move toward the said casing, while a spring moves it from the latter when this pressure ceases, By producing a series of pressures on the push-piece, successive impulses are exerted on the mechanism, thus imparting to the armature of the magneto a continuous rota movement.

ThlS push-pie'ce carries racks gearin with pinions actuatin the mechanism.. hese racks are prefera ly two in number on each side of the lamp body; in each air of racks, one ears with a driving pinion and the other with a loose pinion, so as to obtain a suitable guiding and bearing for the parts,

ligy symmetrically balancing all the stresses. y means of this arrangement, small and light mechanical parts can sustain without inconvenience heavy strains without risk of deformation and wedging which might result therefrom.

The invention is characterized, moreover, by the special arrangement of the armature of the-magneto, which comprises nonmagnetic metal masses connecting the end of the branches of themagneto proper. By means of these masses, the magneto acts as a fly wheel, the tendency to sticking against the polar masses is avoided and the starting is facilitated.

A constructional of the invention is illustrated, by way of example, in the accompanying drawing, in which:

Figure 1 is an elevation of the new lamp.

Fig. 2 is' a similar view when looking from the opposite side.

Fig. 3 is a side view.v

Fi 4 is a section made according to line A- of Fig. 3.

Figs. 5 and 6 are detail views.

As shown in the drawing, comprises a body or casing a on which is mounted, in slides a a push-piece comprising a back I) fitting in the palm of the hand and two small plates 0, one on each side of the lamp. A spring d tends to move the push-piece away.

Each small plate is internally cutout thus forming two racks e e The'racks 6 gear with pinions f loose on their axes, while the racks e gear with pinions g rigidly secured on an axis h. The pinions f and 9 gear to gether. On the axis his secured a ratchet i with which engagesa spring pawl '5 carried by a gear wheel This wheel ears'with a pinion is integral with a wheel the latter gears in its turn with a pinion Z integral witha large wheel I, driving, through the medium of a pinion Z, a pinion m secured on the armature shaft.

When a ressure is exerted with the palm of the ban on the back 1) of the push-piece, the racks 0? cause the pinions g and the shaft in to rotate; the ratchet 5 drives, b means of the awl 11 the pinion i an consequently, the entire multiplying gear train, thus imparting an impulse to the armature n.

When the back I) comes in contact with the body of the lamp, the pressure on the push-piece is relieved; the spring at then brings the push-piece backward. At the moment, the push-piece is stationary, the armature can continue to rotate with the gears Z, Z 2, it, it and j, the pawl freely rotating about the ratchet. The return backward of the push-piece is also permitted by means of the pawl and of the ratchet.

A series of impulses can therefore be imparted to the magneto thus giving to the same a very rapid movement and permitting to obtain a current of relatively great intensity, notwithstanding the small dimensions of the parts of the magneto.

The armature is constituted as shown in the drawing; the ends p" of the armature n are braced by masses 0, of nonmagnetic metal: lead or copper. This arrangement has for main effects of balancing the armaa ture and of facilitating its starting and its the new lamp I rotary movement, as these masses act as a fly wheel and prevent the tendency to sticking opposite the polar masses.

The latter are formed by the ends of a magnet g of suitable shape.

he current is collected by a brush 1' rubbing on a ring 8 rotating with the armature. The brush is connected to a contact 15 on which presses the contact-piece of the lamp.

The mechanism is concealed by covering side plates which are not illustrated.

N otches o serve to engage a stop bolt holding the push-piece in the driven in position when the lamp is not in use.

The above arrangements are given by way of example only; the forms, dimensions and materials used and any detail arrangements can be varied according to circumstances without departing thereby from the principle of the invention.

Claims:

1 In a magneto pocket lamp, a sliding and spring pressed push-piece having two racks, pinions meshing with each other, and one pinion-meshing with one-rack and the other pinion meshing with the other rack, and means for operating the movable part of the magneto from one of the said pinions.

2. In a magneto pocket lamp, a sliding and spring pressed push-piece having two racks, pinions meshing with each other, one pinion meshing with one rack and the other pinion meshing with the other rack, a train of gearing geared with the movable member of the magneto and a pawl and ratchet mechanism for operating the train of gearing from the shaft of one of the said pinions.

3. In'a magneto pocket lamp, a sliding and spring pre'ssed push-piece having spaced members each provided with two racks facing each other, a shaft, pinions on the shaft and meshing with one pair of racks,l0ose pinions each meshing with one of the first named pinions and with the other pair of racks, and means for operating the movable member from the said shaft.

4. In a magneto pocket lamp, a hand actuated push-piece, a magneto armature having metal end pieces and non-magnetic metallic pieces interposed between the end pieces, whereby to give a circular periphery to the armature and cause it to act as a fly wheel.

The foregoing specification of my magneto pocket lamp, signed by me this 5 day of October, 1920.

GEORGES MAXIME BEAUDOT. 

